121202666 has 16 divisors (see below), whose sum is σ = 196009800. Its totient is φ = 55876608.

The previous prime is 121202647. The next prime is 121202689. The reversal of 121202666 is 666202121.

It can be written as a sum of positive squares in 4 ways, for example, as 58079641 + 63123025 = 7621^2 + 7945^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27290 + ... + 31418.

Almost surely, 2^121202666 is an apocalyptic number.

121202666 is a deficient number, since it is larger than the sum of its proper divisors (74807134).

121202666 is a wasteful number, since it uses less digits than its factorization.

121202666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 121202666 is about 11009.2082367444. The cubic root of 121202666 is about 494.8847345803.

Adding to 121202666 its reverse (666202121), we get a palindrome (787404787).

The spelling of 121202666 in words is "one hundred twenty-one million, two hundred two thousand, six hundred sixty-six".